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Efficient removal of Cr (VI) using raw and phosphoric acid modified Sterculia Alata nutshell

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Title Efficient removal of Cr (VI) using raw and phosphoric acid modified Sterculia Alata nutshell
 
Creator Nawaz, Ahmad
Singh, Bineeta
Kumar, Pradeep
 
Subject Biosorption
Cr (VI)
Isotherm
Kinetics
Sterculia Alata nutshell
 
Description 684-692
The adsorption behaviour of Cr (VI) onto raw Sterculia Alata nutshell (RSN) and phosphoric acid modified Sterculia Alata nutshell (PSN) from aqueous solution has been studied. Specific constraints such as initial pH (2-12), adsorbent dose (0.4-3.2 g/L) and temperature (24-32°C) have been investigated to examine the optimum process parameter for adsorption. Both the biosorbents are characterized based on their physicochemical characterization such as FTIR, SEM-EDS and XRD. The adsorption characteristics were assessed using the isotherms (Langmuir and Freundlich) to match the adsorption details. The maximum chromium adsorption capacity is obtained to be 39.89mg/g and 88.30mg/g for RSN and PSN at 28°C respectively. Both the biosorbents confirmed the aptness of pseudo second order kinetics throughout the chromium (VI) abstraction phase with R2 value greater than 0.99.
 
Date 2022-02-02T11:57:56Z
2022-02-02T11:57:56Z
2021-11
 
Type Article
 
Identifier 0975-0991 (Online); 0971-457X (Print)
http://nopr.niscair.res.in/handle/123456789/59053
 
Language en
 
Publisher NIScPR-CSIR, India
 
Source IJCT Vol.28(6) [November 2021]